<template>
<div class="login_container">
  <div class="login_box">
    <!-- 头像区域 -->
    <div class="avater_box">
      <img src="../assets/logo.png" alt="">
    </div>
    <!-- 登录区域 -->
    <el-form ref="loginFormRef" label-width="0px" class="login_form" :model="loginForm" :rules='loginFormRules'>
        <el-form-item prop='username'>
          <el-input v-model="loginForm.username"  >
            <i slot="prefix" class="iconfont icon-user"></i>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" >
            <i slot="prefix" class="iconfont icon-3702mima"></i>
          </el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginRef">重置</el-button>
        </el-form-item>
    </el-form>
  </div>
</div>
</template>

<script>
var successLogin = {
  message: '恭喜你，登陆成功',
  type: 'success',
  duration: 500
}
var errorLogin = {
  message: '登陆失败，密码 或 账户名 错误',
  type: 'error',
  duration: 800
}
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '长度在 6 到 12 个字符', trigger: 'blur' }
        ]
      }

    }
  },
  methods: {
    resetLoginRef () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message(errorLogin)
        this.$message(successLogin)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container{
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);
  }
  .avater_box{
    width: 130px;
    height: 130px;
    padding: 10px;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);

    img{
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }

  .btns{
    display: flex;
    justify-content: flex-end;
  }
  .login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
  }
  .iconfont{
   padding-left: 4px;
  }
</style>
